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Data Sheet

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Cisco Shared Port Adapters/SPA Interface Processors

Cisco 1-Port OC-3c/STM-1c ATM SPA, 3-Port OC-3c/STM-1c ATM

SPA, and 1-Port OC-12c/STM-4c ATM SPA

The extensible Cisco® I-Flex design combines shared port adapters (SPAs) and SPA interface processors (SIPs),

enabling service prioritization for data, voice, and video services. Enterprise and service provider customers can take

advantage of improved slot economics resulting from modular port adapters that are interchangeable across Cisco

routing platforms. The I-Flex design maximizes connectivity options and offers superior service intelligence through

programmable interface processors that deliver line-rate performance.

I-Flex enhances speed--service revenue and provides a rich set of quality--service (QoS) features for premium toof

service delivery while effectively reducing the overall cost of ownership. This data sheet contains the specifications

for the Cisco 1-Port and 3-Port OC-3c/STM-1c ATM, and Cisco 1-Port OC-12c/STM-4c ATM Shared Port Adapters

(refer to Figure 1).

Figure 1. Cisco 1-Port OC-3 ATM SPA, 3-Port OC-3 ATM SPA, and 1-Port OC-12 ATM SPA

Product Overview

This data sheet details the features of the new modular ATM SPAs for Cisco XR 12000 Series Routers, the Cisco

CRS-1 Carrier Routing System and the Cisco ASR 1000 Series. The Cisco ATM SPAs, in conjunction with other

SPAs implementing various types of network technologies, allow the user to flexibly build cost-effective routing

solutions focusing on point--presence (POP) edge, customer premises equipment (CPE), and enterprise of

applications.

Designed for all telcos and Internet service providers (ISPs), the Cisco ATM SPAs support a variety of port choices

and granularity, including OC-3c/STM-1c and OC-12c/STM-4c interfaces for worldwide use. These modules are

designed to support the convergence of data, voice, and video services, allowing customers to migrate existing voice

and video traffic onto a corporate data network for substantial cost savings.

The Cisco ATM SPAs include a comprehensive ATM feature set including per-virtual-circuit and per-virtual-path traffic

shaping, ATM service classes including constant bit rate (CBR), variable bit rate non-real time (VBR-nrt), variable bit

rate real time (VBR-), unspecified bit rate (UBR), Multiprotocol Label Switching (MPLS), QoS, a high-performance rt

segmentation--reassembly (SAR) architecture, and support for a large number of ATM virtual connections. All and

these features are based on industry specifications and standards. In conjunction with the SIPs, the Cisco ATM SPAs

continue to deliver new features made possible by industry-leading Cisco IOS

® Software protocols, services, and an

ATM-rich feature set.

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